88.08% is the change from 344 to 647
Calculation steps:
[( 647 - 344 ) ÷ 344] x 100 = 88.08%
Formula
Percentage change = [(647 - 344) / 344] x 100
Subtract the new number by the original number
647 - 344 = 303
303 ÷ 344 = 0.8808139534883721
0.8808139534883721 x 100 = 88.08%